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Finding the Fourth Proportional to 170,790.30, 256,185.45 and 118,302.30

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Solution

The fourth proportional to 170,790.30, 256,185.45 and 118,302.30 is: 177,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,790.30 : 256,185.45 = 118,302.30 : x
  2. Step 2: Convert to fraction form
    170,790.30/256,185.45 = 118,302.30/x
  3. Step 3: Cross multiply
    170,790.30x = 256,185.45 × 118,302.30
  4. Step 4: Simplify right side
    170,790.30x = 30,307,327,961.54
  5. Step 5: Solve for x
    x = 30,307,327,961.54/170,790.30
  6. Step 6: Final answer
    x = 177,453.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.